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What does an athlete need to win a competition? Train, and train again! What does a student need to do to understand what a percentage is? To train too!

This workbook offers an exciting and unusual training programme. It involves solving interesting and non-standard problems.

A variety of tasks will make training fun and easy and will definitely contribute to the understanding of the concept of percentage, help to work with percentages correctly not only at school, but most importantly in everyday life.

For teachers of secondary schools and students in grades 5-11 to work with in class and at home.